Services
CNC Turning
High-Precision Custom CNC Turned Parts
Why US
Choose our CNC Turning Services
We provide CNC turning services to international clients , specializing in the manufacturing of high-precision rotating parts, precision components, and OEM custom parts.
Relying on advanced multi-axis CNC turning centers, we can reliably process various types of turned parts, from rapid prototyping to mass production.
Whether it’s shafts, sleeves, cylindrical parts, or precision components with strict requirements for coaxiality, roundness, and surface consistency, our CNC turning capabilities can meet the needs of engineering applications.
What is CNC turning
CNC turning is a CNC machining process that removes material by rotating the workpiece and fixing the cutting tool. It is especially suitable for machining rotationally symmetrical parts.
Compared to other machining methods, CNC turning has natural advantages in terms of coaxiality, roundness, and surface consistency.
Typical part types suitable for CNC turning
- Shaft-type parts
- Sleeves, bushings, and ring-shaped parts
- Precision connectors and functional components
- Rotating parts requiring high roundness or high concentricity
In fields such as aerospace, medical, defense, robotics, and industrial automation, these parts often directly affect system performance, thus requiring extremely high stability in CNC turning processes.
Engineering advantages of CNC turning
- High dimensional consistency
It is especially suitable for precision parts that require coaxiality and roundness. - High efficiency and repeatability
Suitable for rapid transition to mass production after prototype verification. - Complex structures are controllable
Multi-axis CNC turning centers reduce errors caused by secondary clamping.
CNC turning center types and maximum machining dimensions
Different types of CNC turning centers vary significantly in terms of machinable dimensions, structural complexity, and machining stability. We flexibly configure appropriate CNC turning equipment based on the part’s geometry, accuracy requirements, and batch size to ensure machining quality and delivery efficiency.
| Part size limitations | Metric units |
|---|---|
| Maximum part diameter | 430 mm |
| Maximum part length | 1000 mm |
| Maximum swing amplitude | 350 mm |
| Maximum spindle through hole | 40 mm |
CNC turning of machinable materials
Our CNC turning services can reliably process over 50 types of metals and engineering plastics, covering a wide range of needs from conventional structural components to high-performance applications. Different materials vary significantly in terms of machinability, thermal deformation, and surface quality; therefore, material selection directly impacts machining solutions, tolerances, and final costs.
We have long been processing a variety of metal materials, applicable to aerospace, medical, defense, machinery and industrial automation and other fields.
Common metallic materials include:
- Aluminum alloy
- Stainless steel
- Low carbon steel / Alloy steel / Tool steel
- Copper/Brass
- Titanium and nickel alloys (superalloys)
In addition to metals, we also offer precision plastic CNC turning services, suitable for functional prototypes, small batches of parts, and specific applications.
Commonly used plastics include:
- POM (Polyoxymethylene/acetal)
- Nylon
- ABS
- Polycarbonate (PC)
- PVC, PP, PE
- PTFE (Teflon)
- PMMA (Acrylic)
CNC turning surface treatment and surface finish
In CNC turning, surface quality not only affects appearance but also directly relates to friction, sealing, corrosion resistance, and assembly reliability. We offer a variety of surface treatment options after turning to optimize the functional performance and long-term stability of parts.
Smoothing process
Removes obvious tool marks; suitable for functional parts and internal structural components.
Fine processing
It improves surface consistency and is suitable for parts that require high assembly precision.
Polishing
It improves surface finish and appearance, and is often used on exposed parts or transparent plastic parts.
Sandblasting
Uniform surface texture reduces glare and conceals minor machining marks.
Anodizing
Enhanced corrosion resistance and surface hardness; available in a variety of colors.
Powder coating
Provides wear-resistant and corrosion-resistant surface protection, suitable for structural components and housings.
Brushed finish
It forms directional textures and is often used for exterior parts and decorative parts.
Electropolishing
While maintaining the texture, it further improves the surface smoothness and cleanliness.
During the manufacturing review phase, we will recommend necessary and reasonable surface treatment solutions based on the application environment, material properties, and cost targets of the parts, in order to avoid over-processing.
CNC turning tolerances and quality control
Tolerance control is a key indicator for evaluating whether a CNC turning manufacturer has engineering-grade delivery capabilities. Our CNC turning processes comply with ISO 2768 standards, and we apply corresponding tolerance levels based on material type.
| Limitations of nominal size | Plastics (ISO 2768-m) | Metals (ISO 2768-f) |
|---|---|---|
| 0.5 – 3 mm | ±0.10 mm | ±0.05 mm |
| 3 – 6 mm | ±0.10 mm | ±0.05 mm |
| 6 – 30 mm | ±0.20 mm | ±0.10 mm |
| 30 – 120 mm | ±0.30 mm | ±0.15 mm |
| 120 – 400 mm | ±0.50 mm | ±0.20 mm |
| 400 – 1000 mm | ±0.80 mm | ±0.30 mm |
| 1000 – 2000 mm | ±1.20 mm | ±0.50 mm |
| 2000 – 4000 mm | ±2.00 mm | |
| *Please clearly indicate the tolerance of nominal dimensions being less than 0.5mm on the technical drawings. | ||
Why choose us, a CNC Turning Manufacturer
When choosing a Chinese CNC turning manufacturer, what really matters is not the number of machines, but whether it has the ability to reliably deliver precision rotating parts.
- With accuracy and consistency as the core
We specialize in machining CNC turning parts that require extremely high standards of coaxiality, roundness, and dimensional consistency, serving clients in medical, aerospace, defense, and industrial applications.
- Covering multiple materials and complex components
It supports CNC turning of aluminum alloys, stainless steel, steel, copper, titanium alloys and various engineering plastics, suitable for precision components and OEM customized parts, without sacrificing design requirements for machining.
- Manufacturing collaboration methods for international customers
We are familiar with the common requirements of international customers regarding drawing specifications, tolerance standards, and quality documents, and our communication always focuses on how to make parts right the first time.
If you already have CAD files, you can send them to us directly to get a CNC lathe quote. If you are still in the design or evaluation stage, we can also assist in determining the feasibility of the process and the cost range.